Kawaguchi International Patent Office
川口 義雄
Kawaguchi International Patent Office is a Japan-based patent agent with 48 years of recorded international activity (1978–2025). 2,644 total international patent cases are on record, spanning 4 foreign jurisdictions and 177 distinct corporate applicants. Sign in to open the complete partner network, year-by-year activity, decision-maker analysis, and named client relationships.
- International cases
- 2,644
- Last 5 years
- 347
- Applicants
- 177
- Flow type
- Incoming-heavy
Sent plus received relationship cases on this firm’s public profile. Can differ from the directory index. As of 2025.
Activity trend (last 10 years)
- Scope
- Kawaguchi International Patent Office · Japan
- Window
- 2017–2025
- As of
- Recorded activity through 2025
- Unit
- International exchange cases
View annual counts
| Year | International cases |
|---|---|
| 2017 | 99 |
| 2018 | 114 |
| 2019 | 209 |
| 2020 | 210 |
| 2021 | 194 |
| 2022 | 202 |
| 2023 | 113 |
| 2024 | 30 |
| 2025 | 2 |
Top international partners
Sends cases to
Similar Japan firms
Global firm case index used for directory ranking. Not the same as a profile’s international exchange total.
- Patent Firm Hara Kenzo Kokusai Patent Office2,646 index cases
- Takada & Takahashi International Patent Office弁理士法人高田・高橋国際特許事務所2,605 index cases
- Kyosei International Patent Office特許業務法人共生国際特許事務所2,687 index cases
- Ueyanagi Patent Office上柳特許事務所2,691 index cases
- Eikou Patent Office特許業務法人栄光特許事務所2,591 index cases
Locked in the full profile
This public page is a preview. Sign in to open the complete partner network, year-by-year activity, and decision-maker analysis for Kawaguchi International Patent Office.
Decision-maker split
Firm-chosen vs applicant-chosen foreign counsel, when tagged.
Full partner list
Every observed counterpart, not only the public top five.
Named clients
Applicant relationships behind the exchange counts.